Updated docstrings, changelog (#228)

* Updated docstrings, changelog

Author: pkittenis

Changelog.rst

@@ -13,6 +13,7 @@ Changes
   for example for Oauth and other two-factor (2FA) or more factor authentication. Thanks @MattCatz .
 * `ssh2.sftp_handle.SFTPHandle.closed` is now a public property indicating whether `ssh2.sftp_handle.SFTPHandle.close`
   was called on a `SFTPHandle` or not.
+* Added `ssh2.channel.Channel.signal` function for sending signals over SSH to an open channel - #221
 
 
 1.1.2

ssh2/channel.c

@@ -575,6 +575,10 @@ cdef class Channel:
         """
         Send signal to channel.
 
+        Signame must be a free form signal name without the leading SIG. Eg 'HUP', 'INT', 'TERM' and so forth.
+
+        See :py:mod:`signal.Signals`.
+
         :param signame: Signal name to send to channel.
         :type signame: str
         """